//
//  WelcomeViewController.swift
//  weibo10
//
//  Created by 猎人 on 15/10/22.
//  Copyright © 2015年 hunter. All rights reserved.
//

import UIKit
import SDWebImage

class WelcomeViewController: UIViewController {
    
    override func loadView() {
        view = backImageView

        setupUI()
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        
        //异步加载头像
    iconView.sd_setImageWithURL(UserAccountViewModel.sharedUserAccount.avatarUrl, placeholderImage: UIImage(named: "avatar_default_big"))
    }

    override func viewDidAppear(animated: Bool) {
        super.viewDidAppear(animated)
        
        iconView.snp_updateConstraints { (make) -> Void in
            make.bottom.equalTo(view.snp_bottom).offset(-view.bounds.height + 200)
        }
        
        // 2. 动画
        welcomeLabel.alpha = 0
        UIView.animateWithDuration(1.2, delay: 0, usingSpringWithDamping: 0.8, initialSpringVelocity: 10, options: [], animations: { () -> Void in
            
            // 修改所有`可动画`属性 - 自动布局的动画
            self.view.layoutIfNeeded()
            
            }) { (_) -> Void in
                
                UIView.animateWithDuration(0.8, animations: { () -> Void in
                    self.welcomeLabel.alpha = 1
                    }, completion: { (_) -> Void in
                        
                        print("OK")
                        NSNotificationCenter.defaultCenter().postNotificationName(WBSwitchRootViewControllerNotification, object: nil)
                })
        }
    }

    
    // MARK: - 懒加载控件
    /// 背景图片
    private lazy var backImageView: UIImageView = UIImageView(imageNamed: "ad_background")
    /// 头像
    private lazy var iconView:UIImageView = {
        let v = UIImageView(imageNamed: "avatar_default_big")
        
        //设置圆角
        v.layer.cornerRadius = 45
        v.layer.masksToBounds = true
        
        return v
    }()
    /// 欢迎标签
     private lazy var welcomeLabel: UILabel = UILabel(title: "欢迎归来", fontSize: 18)
}

// MARK: - 设置界面
extension WelcomeViewController {
    private func setupUI() {
        //1. 添加控件
        view.addSubview(iconView)
        view.addSubview(welcomeLabel)
        
        //2. 指定位置
        iconView.snp_makeConstraints { (make) -> Void in
            make.centerX.equalTo(view.snp_centerX)
            make.bottom.equalTo(view.snp_bottom).offset(-200)
            make.width.equalTo(90)
            make.height.equalTo(90)
        }
        
        welcomeLabel.snp_makeConstraints { (make) -> Void in
            make.centerX.equalTo(iconView.snp_centerX)
            make.top.equalTo(iconView.snp_bottom).offset(16)
        }
    }

}



